Low back pain is a symptom of pain on one or both sides of the back even the spine, which occurs in both men and women, mostly in women. According to statistics, patients with low back pain as the main cause of gynecological outpatient clinics account for about 10% of the number of visits. Both adolescent girls and middle-aged and elderly women have experienced low back pain at least once in their lives. In addition to the special physiological factors, there are many other causes of low back pain in women. Low back pain in women mainly involves obstetrics and gynecology, orthopedics, and urology, which should be treated separately when seeking medical attention, and the treatment plan should be determined according to different situations. The common causes of low back pain in women: 1. Chronic pelvic inflammatory disease is the most common cause of low back pain in women. It is mostly caused by acute pelvic inflammatory disease that occurs in women after undergoing caesarean section, ovarian cystectomy or appendicitis and fails to be treated in time, and is characterized by three major symptoms: lumbago, lower abdominal paroxysmal pain and increased leucorrhea. Back pain is caused by the increase of inflammatory exudate, resulting in pelvic adhesions, which seriously affects life and health. Therefore, it is especially important to do early treatment of disease and early prevention of disease. 2, the uterus position abnormal normal uterus is located in a mild anterior tilted forward position, the surrounding ligaments move freely. When the uterus is posteriorly curved or posteriorly tilted, adhesions are caused by inflammation in and around the uterus, resulting in traction back pain, which mostly occurs after frequent abortions, multiple births or other uterine surgeries. Prolapse, prolapse or high adhesion of the uterus to the abdominal cavity, etc., can pull the ligaments and cause the occurrence of lumbago. There is no special treatment for this kind of low back pain. Correcting the prolapsed uterus and changing the position can relieve the symptoms. 3.Pelvic tumors are mostly seen in middle-aged women. Commonly, such as uterine fibroids, cervical cancer, ovarian cysts, etc., low back pain occurs due to tumor compression of nerves or infiltration of cancer cells into pelvic connective tissue. The pulling of peritoneum by the tumor itself can also cause low back pain. 4, abnormal birth control ring is an aspect that can not be ignored as a cause of women’s low back pain. IUD abnormalities include IUD type not matching with the uterine cavity, IUD elasticity is too large or IUD position is abnormal. Inappropriate IUDs are embedded in the uterine cavity, stimulating the uterine wall and reflexively causing back pain. In this regard, the birth control ring can be removed and replaced. 5, pregnancy and puerperium strain during pregnancy, with the gradual growth of the fetus, pregnant women lumbosacral and pelvic joint ligaments relaxation, while the weight of the uterus increases, resulting in the body weight forward. In order to maintain the body balance, the waist is more forward, if you do not pay attention to rest, it is easy to cause back pain. During pregnancy, the fetus needs sufficient calcium, phosphorus and other nutrients for development. If the intake of nutrients in the diet is not sufficient, it may cause softening and decalcification of the bones of pregnant women, which may also cause back pain. Excessive bleeding during the puerperium, or premature labor, excessive fatigue and cold can also cause low back pain. 6, genitourinary system infection due to anatomical and physiological characteristics, women are prone to urinary system infection, such as acute and chronic pyelonephritis, gonorrhea, cervicitis, cervical erosion, etc., manifested as lumbar pain or sharp pain, and radiating along the ureter to the perineum. In addition, urinary stones, tuberculosis, etc., can also cause lumbago. 7, lumbar muscle strain body overwork, abnormal standing, sitting posture, etc., can lead to lumbar muscle strain and cause chronic vague pain in the waist. Usually should pay attention to the combination of work and rest. 8, lumbar disc protrusion is a common cause of lumbar pain in young and strong women. Mostly caused by lumbar injury, long-term chronic strain, manifested as lumbar pain, lower limbs of radioactive pain numbness, etc., treatment are bed traction, physical therapy, minimally invasive treatment such as: laser, ozone, radio frequency, discoscopy and foraminoscopic minimally invasive surgery. 9, osteoporosis This disease is the most common cause of low back pain in middle-aged and elderly women. Especially after menopause in women, due to the reduction of bone mass of the spine, the reduction of the weight-bearing capacity of the spine, the body in the weight-bearing and even in walking will have low back pain. 10, long-term wear high heels long-term wear high heels so that the balance of the lower limbs are affected, standing, walking can not be arbitrary, the whole body’s reaction, synergy, also prone to acute lumbar sprain. When sprained muscles, ligaments occur in varying degrees of tearing and trace bleeding, swelling and even bruising, can be manifested as lumbago, bringing great inconvenience to work life. 11.Sacral ligament relaxation after pregnancy can be caused by the increase of the fetus and the increase of the lumbar support, resulting in the relaxation of the sacral ligament and the compression of the pelvic nerves and blood vessels and causing lumbago. This kind of low back pain can gradually disappear with the recovery of lumbar muscle strength after childbirth. 12, internal injury factors too many births, abortions and indiscipline in intercourse can cause damage to the kidney qi and lead to lumbago. 13, external factors long-term feeling of cold and dampness, can block the meridians, resulting in poor blood vessels and lumbago. 14.Sacroiliac joint strain injury sacroiliac joint consists of sacral side and bilateral iliac bone, although it is a synovial joint, but the joint surface is staggered high and low, and strong ligament fixation, only a small amount of back and forth and rotational activities. Sacroiliac joint sprain is one of the most common causes of lower back pain. Endocrine influence in women in late pregnancy can make the ligaments relaxed and prone to sprain or early postpartum for a long time. Clinical manifestations are persistent localized pain, fear of weight bearing, aggravation during activity, and difficulty in turning over. In addition, menopausal women may also suffer from low back pain due to plant nerve dysfunction, which is characterized by morning lifting and reduced after activity. There are also factors such as menstrual disorders, dysmenorrhea or emotional crisis, which may also cause low back pain. 15, discogenic low back pain discogenic lower back pain is common in adults aged 35-55 years old, and the incidence is significantly lower in people over 60 years old. Clinical manifestations are soreness and pain between L4, 5-S1 spinous process, posterior iliac, posterior gluteal, inguinal, anterior femoral, posterior femoral, and greater trochanter, etc. The site is deep and difficult to specify exactly; sometimes there can be pain in the inguinal region, or pain in the anterolateral thigh. Symptoms increase after activity, especially after the vertical stress on the spine increases, and cannot sit or stand for long periods of time; symptoms are heavier in sitting than in standing; coughing and sneezing can aggravate the pain; symptoms are generally recurrent and long-lasting, and sometimes difficult to relieve after rest, and can last for months or years. Whether typical discogenic lower back pain is accompanied by radicular radiating pain in the lower extremities is controversial, and those with a negative attitude believe that there is no radicular irritation because there is no nerve root compression. In a group of 24 cases of discogenic lower back pain observed by the authors, radicular pain was observed in 5 cases and disappeared after treatment, and similar reports have been made in other literature. The possible mechanisms are twofold: (1) the more severe the low back pain, the more distant the radiation to the lower extremities44; (2) the agitating chemicals in the nucleus pulposus can flow through the fissure of the annulus fibrosus to the nerve roots and produce radicular radicular pain, but nerve damage such as numbness and weakness is rare.1 One of these two mechanisms or both can act and thus radicular pain similar to that seen in disc herniation can occur. Physical examination: There are no specific positive signs, usually no tenderness, with or without lumbar muscle spasm and limited lumbar extension, lateral flexion, and rotation. The sciatic nerve pull test is negative, and lumbar pain or lumbar pain greater than leg pain may occur on the straight leg raise test, with no signs of nerve damage.